影像科学与光化学 ›› 1996, Vol. 14 ›› Issue (4): 314-319.DOI: 10.7517/j.issn.1674-0475.1996.04.314

• 研究论文 • 上一篇    下一篇

近红外吸收菁染料光氧化反应机理的研究

李军1, 陈萍1, 赵江1, 郑德水1, 冈崎庸树2, 速水正明2   

  1. 1. 中国科学院感光化学研究所, 北京100101;
    2. 日本感光色素研究所, 岗山市
  • 收稿日期:1996-02-05 修回日期:1996-05-17 出版日期:1996-11-20 发布日期:1996-11-20
  • 通讯作者: 陈萍
  • 基金资助:
    国家自然科学基金

STUDY ON THE MECHANISM OF PHOTOOXIDATION OF NEAR-INFRARED ABSORBING CYANINE DYES

LIJun CHEN Ping1, ZHAO Jiang1, ZHENG Deshui1, TSUNEKI Okazaki1, MASAAKI Hayami2   

  1. 1. Institute of Photographic Chemistry, The Chinese Academy of Sciences, Beijing 100101, P. R. China;
    2. Nippon Kankoh-Shikiso Kenkyusho, Okayama 701, Japan
  • Received:1996-02-05 Revised:1996-05-17 Online:1996-11-20 Published:1996-11-20

摘要: 本文选择了三种分子结构相同而母核杂原子不同的近红外吸收菁染料,对它们的光谱性能特征及光氧化稳定性能进行了研究。结果表明,具有三种不同母核杂原子的菁染料,其光氧化稳定性顺序为:苯并 唑>苯并噻唑>苯并硒唑。通过猝灭实验给出,在三种菁染料的光氧化反应机制中,具有反应活性的单线态氧和超氧负离子同时存在,其中单线态氧是导致菁染料褪色的主要因素。

关键词: 近红外吸收菁染料, 光氧化, 单线态氧, 超氧负离子

Abstract: In this paper,spectrum characteristic and stability of three near-infrared cyanine dyes against photooxidation have been studied. Results showed that the stability of dyes with three kinds typical structure of heterocyclic stem against photooxidation was in such order:benzoxazole>benzothiazole>benselenazole. It was indicated through the quenching experiments that both of singlet oxygen mechanism and superoxide anion mechanism might be present in the auto-sensitized photooxidation of cyanine dyes, and photooxidation merely occurred in single oxygen mechanism.

Key words: infrared abosorbing cyanine dye, phtooxidation, singlet oxygen, superoxide anion